Sad-iron.



OTTO SPAI-IR AND CHARLES STICHLER, OF PHILADELPHIA, PENNSYLVANIA.

SAD-IRON. i

Specification of Letters'iatent.

Patent-ea Jan. 14, i913.

Application led November 22, 1911. Serial No. 661,821.

To all whom it may concern Be it known that we, O'rro Spann and CHARLES STIoiiLEn, the former a citizen of the United States and the latter' a subject of the German Emperor, both residents of' "kind which are heated internally by means bodyv of the iron which is provided-with side of-jets of llame and has for its object to provide a structure in which the flames are broken up and distributed so that the heat.- ing effect thereof on the iron will be increased and become quickly apparent.

A further object of our invention is to secure a perfect mixture of the heating gases and air`to secure perfect combustion and a consequent maximum amount of heat with a minimum expenditure of fuel.

Other objects of our invention are to provide a cover which may be easily moved to expose the interior of the body of the iron and a readily operated'locking means for securing said cover in position on the body.

Still other objects of. our invention will appear from the description hereinafter and the features of novelty will be pointed out in the appended claims.

Reference is to be had to the accompanying drawings in which* Figure 1 is a side elevation of a' tailors iron or goose constructed accordingr to our invention; Fig. 2 is a cross-section thereof on the line 2 2 of Fig. l; Fig. 3 is an end elevation thereof with parts in section; Fig.

'4 is a central longitudinal section of our improved iron on the line 4 4 of Fig. 5;

'Figis a plan View of the body of the iron `and with the cover removed and parts in section; Fig. 6 is a side elevation of a .small household iron constructed according to our invention; Fig. 7 is a central longitudinal section thereofFigjS isa'plan view similar to Fig. 5; Fig. 9 is a cross-section on the line 9-9 of Fig. 7 and Fig. 10 is a longitudinal section of the Bunsen tube.

In the drawings A represents the hollow walls terminating in anapex B anda rear 'Wall C connecting the two side walls as clearly shown-in Fig. 5. The said body A is'further provided with the usual. bottpm E and is preferably open at the top, the hollow interior forming a heating chamber F. 'An upwardly extending projection G is located at the upper portion of the apex B of the body and preferably extends along the upper portion of each side wall for a short distance as shown in Fig. 5, similar projections H being located at the corners formed at the points of connection between the said side walls and the rear walls C, said projections H also preferably extending along the side walls and the rear wall for a short distance as best illustrated in Fig. 5. An upwardly projecting lug I is located on the rear wall C intermediate of the two projections H and as shown best in Fig. 3 has its upper surface in a plane lower than the upper surfaces of said projections H, or in other words is not as high assaid projections H for reasons which will appear more fully hereinafter.' A lever .J is rotatably mounted .on the lug I, preferably by means of a screw-threaded stem j which screws into an internally screwthreaded aperture z' formed in the' lug I. The said lever thus in addition to-being rotatable relativelyl to the body of the iron, will' also move up or down in the direction of the axis of the stem j according to th'e direction ,of rotation and is further provided with projections or shoulders j which extend on'opposite sides of the axis of saidstem j, the whole comprising a locking means fory the purpose to, be described hereinafter. AcoyerK of substantially the same shape as the body A when looked at in plan and movable relatively theretol is arranged to cover the open top of the body A and is supported by the projections G and H. The projections G and H come into contact with the cover -at its apex and at the corners formed by the side and rear edges thereof, so that said cover, with this arrangement engages thebody and is supported .only at three spaced points. It will be seen by a reference toFig. 1 that the upper edges of the side walls between the projections-G and H are thus spaced from the cover to form continuous apertures a extending substantially throughout the length of the body and .by referring to Fig. 3 that the port-ions of the upper edge of the rear wall C between. each projection H and the lug I are Simi' larly spaced to form apertures a. The cover K is preferably though not necessarily formed' with a depressed portion'k extendhandle tof'ljecomef heated through heat con-M duction;frol'n'f; thefbo'dy isconsiderably re-4 ing-'inwardly from therear,edge,thereof.and

provided with 'iin'open ended sloth for the,

if .accommodation ofthe-fstemwy'v of the lever --J l when-the cover 1K is inpositionjonfthe. bodyl A'. At' itsfront portion or. apex' the coverhK is connected with'thebdyinvany suitable from itsilowersurfae'e and carryingfgapin into-an aperture or' recesso2 formedwithin fthe front portionor apex-bf the bOdY A A v'handle L for inanip'ulatii'i,dl the'iron' is seeuredto said coverIK by means' of bolts 'and nuts clearly` slioyviiv inFig. 4, itbeing understood thatlinsteadofbeingmade separate froinf the cover .the ha'ndle' may ybe made integral tlfierewith. The said lian'dleis prete'rably'made witlififsets Z which are 'of relatively :small area 'and'. preferably' engage l ,sii'iiilar offsets ctfformed Aon the cover f .W'it-h this construction the contacting sur facesl ofthefcoyerj-andghandle are orfrelf'i-I vtively'smallarea 'so'that the tendency of the 4duced. Tof-further Aminimizetlie tendency y ofjthe' handletoloecoine'heated, especially large-irons @such` asi'ised by tailors the" `cover-K is provded on "its 'loweror inner Asurface with'. a-.urvedf or otherwise recessed", j shield N 'which'fmiiy 'besecured m 'position on said coyei" in any suitable manner. as for ift-,p@sit-ion .iat-he 'cover yfoinmjs in' conjunction witlil -"tlie,"necessity' for individual lmolds for irons/'of .idiferen-t-*izveights .That is the bodies andcove'rs ofa certain type of irons' f-inayiall bema'de in the same mold and if a :heavy iron is desiredallfthat is necessary'is 5 f to `attacjli'a, shield heavy .enough .to bring the assembled partsto the desired weight lfya'ridw'fice versa ifan iron` of less weight is desired.

A well or recess O form-ed in the bottom efEso as to extend longitudinallyA ofthe body vA and' isi-'preferably of ldiiferent Widths in.`r

'-cros's'section from-top to bottom or more les Specifically .is formed with steps as clearl)v l S hbwn rinfFig. 2. .Spaeed air .inlets -P extend-'at an angle to the axis of the body A between the'inner and outer surfaces of the bottomE and have their one end open to the atmosphere andtheir opposite ends communicating with the well or recess O.

.In order 'to provide a means for heating the iron a burner is located in the interior heating chamber- I1` `-thereof and in thc present case comprises a tube Q which passes vthrough a. suitable opening in the rear wall C'of the iron and hasits one end f] screwthreaded toI screw into a suitable screwthreaded aperture in the front or apex B of the body A: .This tube Q extends longitudinally of the body A inregistry with the well or: recess O and. is provided with' two series of apertures o arranged lengthwise thereof'on opposite sides ofl a vertical'line drawn through the center of the tube and at about the level 'of tliehorizontal walls of the steps 0 as shown, best in-'Fig't 2. The portion q2 of the tubexQwhicli is external of the body is bent,upwardlyv and has its'freeend arrangedvto accommodate the nipple o adapted toureceive the one end `ot the cus- .tomary' flexible hose ,the other end of which is connected with a .source of fuel supply.'

VThe said nipple g3' is provided with the usual air inletsg* necessary ina Bunsen'burner and4 is further `provided -witli a preferably annularshoulder Q5 located between said air inlets'q1 "and the free'end of said nipple. 9

This .shoulder g5 act-s as a stop for the end of the tlexible'hose and prevents said hose from' beingr slipped over the nippleg. far enough y -tocQyQr-Or obstriictth'e air inlet q. .instancebythe -samebolts and nuts M which f' i fastenthe' handle to tliesaid cover. The

method "of, attachment -should Vpreferably; be

j -Ir'onian inspection of Fig.2 of thed'rawl'ings it will. be vseenthvat Athe exteriorlportion g2 ot the tube Q inaddition to projecting ico line perpendicular to the base of the iron.

.In order to maintain the portion f/g of the tube Qin this position Various lmeans may A 'be adopted. For instance the screw-thread ed aperture i may be made to extend .down to i the tube Q and a short screw 1f screwed thereaccomplished by forcing the lever .T past the portion (12 of the tube Q- TllG fllbfQ may also be tightly screwed into the body of the iron with thetportion q2 thereof inthe proper inclined position and thefpa'rts then heated so thoroughly as-to practically weld them together.

is of course. to be understood that the above are only examples of how the tuhc S-in soas tobear on said tube and thus secure Q may be fixed in the body' and that other i ways may be provided to suit special and individual conditions. With this arrangenient the. flexible gas supply hose is main Loaders g2 of the tube Q extended perpendicularly to the bottom of the iron. The said inclined exteriorport-ion of the tube also acts as a stop to prevent the lever J from being readily and completely rotated, which leverv otherwise might by careless manipulation become entirely separated from the body of the iron or at least too loose to effectively lock the cover in position. Ilr the preferred form the portion q2 of the tube Q outside of the body A preferably has a tube q inserted therein thus forming' two different internal diameters and a shoulder g". The

mixture of gas and air thus first enters the tube q comprising the smaller diameter, and then reaches the larger diameter of the tube and becomes slightly expandedl and consequently undelless pressure than is the mixture in the reduced portion of the tube Q. Thus the portion of themixture which is nearer lto the burner or in the largest portion ofthe tube Q is being continually propelled forward by the force exerted by that portionof the mixture which is under greater compression in the reduced lportion' formed by the tube' Q6. The danger of flare back or back fire in the Bunsen burner is thus materially reduced. .In this form'of iron the cover K is moved relatively to the body to uncover th saine when it is desired to ignite the burner and then returned to normal position as by replacing the pin le in the aperture a2 and the stem 7' `of the lever J in position in the slot le'. The said lever J is now rotated in the proper direction to cause the Stem j to screw int-o the aperture z' and the shoulders j thus to exert a pressure on the depressed portion la ofthe cover on each side of the slot k the said le! ver J, shoulders 7" and stem j forming a locking means for securing the cover in its normal posit-ion. Owing to the fact thatthe upper surface of the lug I is lower than the upper surfaces of the projections H the cover K does not engagesaid lug I and the pressure of the shoulders j will take advantage of any flexibility in said cover at this point to more firmly and securely lock it in position. The cover K engaging the body only at the projections G and H or in other words at onlythree points need not haveits lower surface carefully finished to remove inequalities or imperfectionstherefrom and similarly the body of the iron need not be carefully finished at its upper portion to i secure adperfect fit of the cover on the body and illust-rated produces unobstructed openings or apertures to provide the draft or.

a. and a located above the burner, air is drawn'through saidinletsP and asses all around and through the jets of ame and the products lof combustion pass out of'the apertures a and a thus securing perfect combustion and preventing the flames from flaring through the inlets P to the outside of the iron. The iron'even though of large size is therefore quickly heated and is ready for use in a minimum period of time. p'

It will lbe noted that when the cover'K is in position to coverv the body the walls of-the shield N are spaced from and substantially .parallel with the inner surface of the body thus' forming passages through which the products of combustion are'efectively conducted. to the. apertures a. This is best shown in Fig. 2 and insures an absolutely' perfectand complete consumption of the gas thus prevent-lng a smell of unburned gas as is the case in many existing construct-ions.

In Figs. .6. 7 8 and 9 wehave illustrated a small or household iror constructed according to our invention. This form of iron in the main is substantially the same as the larger formlrst described and differs therefrom mainly only in the form of the 'well with which it is provided. In the small iron the well o is simply a recess extending lengthwise of the body and located in aline-A ment or registry with the burner Q whichn small form of iron may be constructed and operate the same as the larger form.

In both forms of our`invention asubstantiallly' perfect and complete consumption of the gas takes place resultingin'a maximum degree of heat with a minimum amountvof gas and each iron is capable of easy operation over an enlarged area without interferin with the gas supply hose.

, hile we have shown a burner comprising a continuous tube other equivalent forms of'burner having an exterior inlet tube a.- ranged at an angle to the vertical may be use in combination with the iron as described if desired. Various chenilles in the specific forms l 20 xt 'v .l shown andv ldescribed. be .Y the scope of 'the vclaims Without; departing from 'the spirit. 'of 'our invention. -We claim:

,5'V l. Y sad iron comprising 'a hollowv, body,` el eover t herefor,'a burnerlocated 1n said,

",body `for heating .seid iron and having 'an inclined fue'lminlet.pontion-located exteriorly I' of said body, `and rotatable AIneens for ,locltif 10 ing said cover` on saidv bodyend cornprising l ,a i` portion VJadoptedl to engage saidlncli-ned A,fuel inlet portion`wherebyeomplete'rotation od vbeing'provided Withewell extending gitndinally thereof, ia `burner'locatedV in uni-ted `to n fuel inlet portion xlocated inst said inclined tube. u d

and tpeover movable. relatively thereto, said "b'oclyifbein-g prmitled-ivith e Well extending;l

nndhnving :in exterior 'porton'inclined to" A the' vertical in combination with n' locking 3bineuns 'for holding the cover dovvn said means having niportion` adapted tobear'v against said inclinedtube'.

4. "A sad iron comprisingv 'a hollow body Y provided vvith .r'ivell exten-ding lengthwise ,;of I'the looking means is normally-prevented.; 9. l1" endffron comprising "hollow body nfl n. cover movable relatively thereto, seidv bodynb'ove said Welland 'having one rly 'of seid body'end inclined to the' -`vertical"in combination with a? locking. oneens 'for holding the covendoivn, said" fnenns having atportion".adaptedV tolbear 3; Asad iron comprisingn `holloiv body;

Ithereof' and 'shaped 'in' crossv L the 0.

'uppersur'fce' ofsaid step .being unbroken and a burnertube 'extending into-said body andlocatedwthin thev widest portion'. of said-well and havingvapertures adjacent to the step thereof. 45

y 5. A. sad iron comprising n hollow body havingl a 'locking recess, n cover therefor lnoyeble relatively to said body` provided" with edepressed portion and a slotlocnted therein, ny projection on said fcovei n'rrnnged 50. to enter said recess to preveutremovul of said cover from the body and n locking le# .Yel'zrotntably' mounted on said body `and having e .portionarranged' to extend through said slot and proJections on said 5.5

locking level` adapted to exert n pressure'on the ldepressed portion of said cover on op- .positeI sides of said slot to lock said cover in operative position.- r

. "6. A sed iron comprising n hollow body, G0 ztbnrner in saidI body, a cover therefor movvablerelatively to said body, spaced projec-` ytions'on said body for engaging said coverV .adjacent to'one end thereof, a lug 011 said body intermediate of said.' projections and 65 having its u-ppersurfnce 1n n plane lower 'Vthfan' the upper surfaces of said projections andmeans on said lug for locking said cover inposition by exertinga pressure thereon. f In testimony-whereof we havehereunto 70 set our hands in the presenceof two`subscribing Witnesses. I A y OTTO SPA'HR. CHARLES STICI-ILER. Witnesseszn E. LAUimNoEWnsrnn, l .EARL T. KRAMER. f' f Copies of this patent may be obtained 'for ve cents each/hy eddressing the: f Commissioner o1." Patents, 

